CS ADR-DSN.K.500 Signalling lamp

(a)A signalling lamp should be provided at a controlled aerodrome in the aerodrome control tower.

(b)Characteristics:

(1)A signalling lamp should be capable of producing red, green and white signals, and of:

(i)being aimed manually at any target as required; and

(ii)giving a signal in any one colour followed by a signal in either of the two other colours.

(2)The beam spread should be not less than 1° or greater than 3°, with negligible light beyond 3°. When the signalling lamp is intended for use in the daytime, the intensity of the coloured light should be not less than 6 000 cd.